No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 12

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview

Overview

This topic describes the Smart Channel technology and its features.

Description

Smart Channel is a dynamic link adaptation solution. A Smart Channel contains two LAGs (Eth-Trunks) in active/standby mode and multiple ports. VLANs of the active LAG forward data, while those of the standby LAG are blocked and can only receive and send LACP BPDU packets. After a port is added to a Smart Channel, it becomes a member port and is blocked until it is added to a LAG. The port can be added to a LAG automatically based on the link aggregation configuration of the connected TOR switch. The member port becomes a trunk port after it is added to a LAG. All member ports can receive and send LACP BPDU packets, but only the active trunk ports can forward data. When the active LAG fails, a failover occurs. The standby LAG becomes active and starts forwarding data.

Purpose

The Smart Channel technology improves data center network reliability by preventing network loops and enables blade servers to adapt to different networks, such as networks with stacking and virtual port channels (vPCs).

Figure 11-87 Application example

E9000 blade servers can connect to a data center in link aggregation or active/standby mode. The Smart Channel technology supports both modes.

  • Link aggregation mode: Two switch modules in the E9000 work in stack mode. Two data center switches work in stack or vPC mode. The four links (links 1 to 4 in the preceding figure) between the switch modules and data center switches are added to a Smart Channel. Create a LAG for the data center switches and add the four links to the LAG, which works in LACP mode. The Smart Channel automatically creates a LAG based on the LACP information of the four links and adds the four links to the LAG.
  • Active/Standby mode: Two switch modules in the E9000 work in stack mode. Two data center switches are cascaded through one or more links. Add the four links connecting switch modules and data center switches to a Smart Channel. Create a LAG for each of the two data center switches. Add two links to each LAG, which works in LACP mode. The Smart Channel automatically creates two LAGs based on the link status of data center switches, adds the corresponding two links to each LAG, and sets one of the LAGs to the active state. Ports in the active LAG forward data, while those in the standby LAG are blocked and discard all data packets.

Features

The Smart Channel technology provides the following features:

  • Automatic link aggregation: Physical ports added to a Smart Channel can be added automatically to LAGs based on the link aggregation configuration of the connected TOR switch that works in LACP mode. Ports not added to LAGs are blocked to prevent network loops.
  • Quick switchover: When the active LAG fails, the standby LAG immediately starts forwarding data in place of the active LAG. Also, the standby LAG sends gratuitous ARP packets to update the external L2 switch forwarding status to implement quick traffic switchover.
  • Failure detection: If a Smart Channel fails, switch module ports connected to blades are disabled in related VLANs. Blade NICs switch over traffic after detecting the failure, reducing service interruption time.

The Smart Channel technology enables different blade servers to adapt to a data center network using the same Smart Channel configuration. Also, the technology improves network reliability by preventing loops no matter the blade servers connect to the data center network in what ways. You do not need to use the STP, RSTP, or MSTP protocol to prevent loops.

Translation
Download
Updated: 2019-08-09

Document ID: EDOC1000041694

Views: 59091

Downloads: 3623

Average rating:
This Document Applies to these Products
Related Version
Related Documents
Share
Previous Next